SQL Server 2014 and SharePoint Server 2013

3/21/2014 is the first full day of Spring, and the first full day of SQL Server 2014 RTM. Undoubtedly the question will be asked when will SharePoint Server 2013 support SQL Server 2014. While it remains early, SharePoint Server 2013 will support SQL Server 2014 with the April Cumulative Update.

This question and this post puzzle me. People are already installing SP 2013 on SQL Server 2014 CTP1 and CTP2. They've been doing that for months. So SP already supports SQL Server 2014. So what is the April update actually going to do? Maybe I should reverse the question: How does SP 2013 not support SQL Server 2014?